/* Harvard Pakistan Trek — styles. Green and white, gold accent. */

:root{
  --g-900:#062117;
  --g-800:#0A3D2B;
  --g-700:#0E5136;
  --g-500:#12704A;
  --gold:#B8912A;
  --gold-2:#DCBB57;
  --paper:#F7F8F5;
  --line:#E2E6E0;
  --ink:#12211B;
  --ink-2:#4A5C53;

  --ff-d:"Instrument Serif",Georgia,"Times New Roman",serif;
  --ff-b:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --wrap:1140px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:#fff;color:var(--ink);
  font-family:var(--ff-b);font-size:17px;line-height:1.7;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:400;letter-spacing:-.015em}
p{margin:0 0 1.1em}
::selection{background:var(--gold);color:#fff}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px;width:100%}
.wrap--narrow{max-width:820px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:.85em 1.7em;border-radius:4px;font-size:.94rem;font-weight:500;
  border:1px solid transparent;cursor:pointer;transition:background .25s,color .25s,border-color .25s;
}
.btn--gold{background:var(--gold);color:#fff}
.btn--gold:hover{background:#a17d21}
.btn--ghost{border-color:rgba(255,255,255,.4);color:#fff}
.btn--ghost:hover{background:rgba(255,255,255,.12)}
.btn--sm{padding:.55em 1.15em;font-size:.85rem}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:18px 28px;transition:background .3s,padding .3s,box-shadow .3s;
}
.nav.is-stuck{background:var(--g-900);padding:12px 28px;box-shadow:0 1px 0 rgba(255,255,255,.1)}
.nav__brand{display:flex;align-items:center;gap:12px;color:#fff;position:relative;z-index:2}
.nav__crest{width:36px;height:36px;object-fit:contain;filter:brightness(2) saturate(.5)}
.nav__brand b{display:block;font-family:var(--ff-d);font-size:1.1rem;font-weight:400;line-height:1.15}
.nav__brand em{font-style:normal;font-size:.7rem;letter-spacing:.24em;color:var(--gold-2)}
.nav__links{display:flex;align-items:center;gap:28px}
.nav__links a{font-size:.88rem;color:rgba(255,255,255,.8);transition:color .2s}
.nav__links a:hover{color:#fff}
.nav__links .btn{color:#fff}
.nav__burger{display:none;background:none;border:0;padding:10px;cursor:pointer;position:relative;z-index:2}
.nav__burger span{display:block;width:24px;height:2px;background:#fff;margin:5px 0;transition:transform .3s}
.nav__burger[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg)}
.nav__burger[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{
  position:relative;min-height:88svh;display:flex;align-items:center;
  background:var(--g-800);color:#fff;padding:150px 28px 120px;overflow:hidden;
}
.hero__ridge{position:absolute;left:0;right:0;bottom:0;height:46%;min-height:220px;opacity:.5}
.hero__ridge svg{position:absolute;bottom:0;left:0;width:100%;height:100%}
.hero__ridge svg:first-child path{fill:#0c4b33}
.hero__ridge svg:last-child path{fill:#083425}
.hero__inner{position:relative;z-index:2;max-width:var(--wrap);margin:0 auto;width:100%}
.hero__kicker{font-size:.76rem;letter-spacing:.22em;text-transform:uppercase;color:rgba(255,255,255,.6);margin-bottom:20px}
.hero__title{font-family:var(--ff-d);font-size:clamp(2.9rem,7vw,5.6rem);line-height:1.02;margin-bottom:18px;max-width:16ch}
.hero__dates{color:var(--gold-2);font-size:1rem;letter-spacing:.04em;margin-bottom:22px}
.hero__blurb{max-width:56ch;color:rgba(255,255,255,.8);margin-bottom:34px}
.hero__cta{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- sections ---------- */
.section{padding:clamp(72px,9vw,120px) 0}
.section--paper{background:var(--paper)}
.section--tight{padding-top:0}
.section--green{background:var(--g-800);color:#fff}
.section--dark{background:var(--g-900);color:#fff}
.eyebrow{display:block;font-size:.72rem;letter-spacing:.24em;text-transform:uppercase;color:var(--gold);margin-bottom:16px}
.section--green .eyebrow,.section--dark .eyebrow{color:var(--gold-2)}
.head{margin-bottom:52px;max-width:640px}
.head h2,.split__head h2{font-family:var(--ff-d);font-size:clamp(2.1rem,4.4vw,3.2rem);line-height:1.1}
.head__note{margin:16px 0 0;font-size:.94rem;color:var(--ink-2)}
.section--green .head__note,.section--dark .head__note{color:rgba(255,255,255,.65)}

.reveal{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- about ---------- */
.split{display:grid;grid-template-columns:1fr 1.15fr;gap:64px;align-items:start}
.split__body p{color:var(--ink-2);margin-bottom:1.3em}
.split__body p:last-child{margin-bottom:0}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:72px;padding-top:44px;border-top:1px solid var(--line)}
.stat b{display:block;font-family:var(--ff-d);font-size:2.6rem;line-height:1;color:var(--g-700)}
.stat span{display:block;margin-top:8px;font-size:.88rem;color:var(--ink-2)}

/* ---------- three columns ---------- */
.cols{display:grid;grid-template-columns:repeat(3,1fr);gap:44px}
.col h3{font-family:var(--ff-d);font-size:1.6rem;margin-bottom:12px;padding-top:18px;border-top:2px solid var(--gold)}
.col p{margin:0;color:rgba(255,255,255,.78);font-size:.96rem}

/* ---------- where ---------- */
.wheregrid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:center}
#pakMap{width:100%;height:auto;overflow:visible}
#pakOutline{fill:#DFE9E2;stroke:#B9CDC1;stroke-width:2}
#routeLine{fill:none;stroke:var(--gold);stroke-width:3;stroke-dasharray:10 9}
.pin circle{fill:var(--gold);stroke:#fff;stroke-width:3}
.pin text{fill:var(--ink);font-family:var(--ff-b);font-size:30px;font-weight:600}
.wheregrid__list{display:flex;flex-direction:column;gap:26px}
.city{display:grid;grid-template-columns:150px 1fr;gap:24px;align-items:center}
.city img{width:150px;height:110px;object-fit:cover;border-radius:4px}
.city h3{font-family:var(--ff-d);font-size:1.55rem;line-height:1.2;margin-bottom:8px}
.city h3 span{display:block;font-family:var(--ff-b);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold);margin-top:4px}
.city p{margin:0;font-size:.94rem;color:var(--ink-2)}

/* ---------- programme ---------- */
.prog{display:flex;flex-direction:column;gap:56px}
.progitem{display:grid;grid-template-columns:340px 1fr;gap:44px;align-items:center}
.progitem:nth-child(even){grid-template-columns:1fr 340px}
.progitem:nth-child(even) img{order:2}
.progitem img{width:100%;height:230px;object-fit:cover;border-radius:4px}
.progitem h3{font-family:var(--ff-d);font-size:1.8rem;margin-bottom:12px}
.progitem p{margin:0;color:var(--ink-2)}

/* ---------- photos ---------- */
.masonry{columns:4;column-gap:12px}
.mitem{break-inside:avoid;margin-bottom:12px;position:relative;cursor:zoom-in;border-radius:3px;overflow:hidden}
.mitem img{width:100%;transition:opacity .3s}
.mitem:hover img{opacity:.82}
.mitem figcaption{
  position:absolute;inset:auto 0 0 0;padding:22px 14px 12px;color:#fff;font-size:.82rem;
  background:linear-gradient(transparent,rgba(6,33,23,.9));opacity:0;transition:opacity .3s;
}
.mitem:hover figcaption{opacity:1}

/* ---------- quotes ---------- */
.quotes{display:grid;grid-template-columns:repeat(2,1fr);gap:40px}
.quote{margin:0;padding-left:22px;border-left:2px solid var(--gold)}
.quote p{font-family:var(--ff-d);font-size:1.34rem;line-height:1.45;color:var(--ink)}
.quote cite{font-style:normal;font-size:.84rem;color:var(--ink-2)}
.quote cite b{display:block;font-weight:600;color:var(--ink);font-size:.92rem}

/* ---------- sponsorship ---------- */
.sponsor{display:grid;grid-template-columns:1fr 1.2fr;gap:56px;align-items:start}
.sponsor h3{font-family:var(--ff-d);font-size:1.5rem;margin-bottom:20px}
.sponsor ul{list-style:none;margin:0;padding:0}
.sponsor__cost li{display:flex;justify-content:space-between;gap:20px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.16);font-size:.94rem;color:rgba(255,255,255,.82)}
.sponsor__total{display:flex;justify-content:space-between;align-items:baseline;padding-top:20px;font-size:.82rem;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.6)}
.sponsor__total b{font-family:var(--ff-d);font-size:2.1rem;color:var(--gold-2);letter-spacing:0}
.sponsor__what li{padding:10px 0 10px 24px;position:relative;font-size:.95rem;color:rgba(255,255,255,.85)}
.sponsor__what li::before{content:"";position:absolute;left:0;top:20px;width:10px;height:1px;background:var(--gold-2)}
.sponsor__what p{margin:26px 0;color:rgba(255,255,255,.68);font-size:.94rem}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.fitem{border-bottom:1px solid var(--line)}
.fq{
  width:100%;background:none;border:0;font:inherit;text-align:left;cursor:pointer;
  padding:22px 44px 22px 0;position:relative;color:var(--ink);font-size:1.04rem;font-weight:500;
}
.fq::after{content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);color:var(--gold);font-size:1.4rem;transition:transform .3s}
.fitem.is-open .fq::after{transform:translateY(-50%) rotate(45deg)}
.fa{max-height:0;overflow:hidden;transition:max-height .4s ease}
.fa p{padding:0 30px 24px 0;margin:0;color:var(--ink-2);font-size:.98rem}

/* ---------- contact + team ---------- */
.contact__email{font-family:var(--ff-d);font-size:clamp(1.5rem,3.4vw,2.3rem);margin-bottom:48px}
.contact__email a{color:var(--gold-2);border-bottom:1px solid rgba(220,187,87,.4)}
.contact__email a:hover{border-bottom-color:var(--gold-2)}
.team{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;padding-top:40px;border-top:1px solid rgba(255,255,255,.16)}
.tcard b{display:block;font-family:var(--ff-d);font-size:1.4rem;font-weight:400}
.tcard span{display:block;font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-2);margin:6px 0 12px}
.tcard a{font-size:.88rem;color:rgba(255,255,255,.7);border-bottom:1px solid rgba(255,255,255,.2)}
.tcard a:hover{color:#fff}

/* ---------- footer ---------- */
.footer{background:var(--g-900);color:#fff;padding:64px 0 0;border-top:1px solid rgba(255,255,255,.12)}
.footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer__crest{width:56px;filter:brightness(2) saturate(.5);margin-bottom:14px}
.footer__name{font-family:var(--ff-d);font-size:1.4rem;margin:0}
.footer__sub{color:rgba(255,255,255,.5);font-size:.86rem;margin:4px 0 0}
.footer h4{font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-2);margin-bottom:14px}
.footer__grid a{display:block;color:rgba(255,255,255,.7);font-size:.9rem;padding:5px 0}
.footer__grid a:hover{color:#fff}
.footer__bar{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 28px;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;max-width:var(--wrap);margin:0 auto;color:rgba(255,255,255,.42);font-size:.8rem;
}

/* ---------- lightbox ---------- */
.lightbox{
  position:fixed;inset:0;z-index:500;background:rgba(6,20,14,.95);
  display:none;align-items:center;justify-content:center;gap:26px;padding:40px;
}
.lightbox.is-open{display:flex}
.lightbox__fig{margin:0;text-align:center}
.lightbox__fig img{max-height:76vh;width:auto;margin:0 auto;border-radius:3px}
.lightbox__fig figcaption{color:rgba(255,255,255,.75);margin-top:16px;font-size:.92rem}
.lightbox__close{position:absolute;top:22px;right:26px}
.lightbox__close,.lightbox__nav{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);color:#fff;
  width:44px;height:44px;border-radius:50%;cursor:pointer;font-size:1rem;flex:0 0 auto;transition:background .2s;
}
.lightbox__close:hover,.lightbox__nav:hover{background:var(--gold);border-color:var(--gold)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .split,.wheregrid,.sponsor{grid-template-columns:1fr;gap:40px}
  .cols{grid-template-columns:1fr;gap:32px}
  .quotes{grid-template-columns:1fr;gap:32px}
  .stats{grid-template-columns:repeat(2,1fr);gap:32px}
  .masonry{columns:3}
  .progitem,.progitem:nth-child(even){grid-template-columns:1fr;gap:22px}
  .progitem:nth-child(even) img{order:0}
  .progitem img{height:250px}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  body{font-size:16px}
  .nav__burger{display:block}
  .nav__links{
    position:fixed;inset:0 0 auto 0;padding:88px 28px 32px;flex-direction:column;align-items:flex-start;gap:4px;
    background:var(--g-900);transform:translateY(-102%);transition:transform .4s ease;
  }
  .nav__links.is-open{transform:none}
  .nav__links a{font-size:1.2rem;padding:10px 0;font-family:var(--ff-d)}
  .nav__links .btn{margin-top:14px;font-family:var(--ff-b);font-size:.92rem;align-self:flex-start}
  .hero{padding-top:120px}
  .masonry{columns:2}
  .team{grid-template-columns:1fr;gap:24px}
  .city{grid-template-columns:1fr;gap:14px}
  .city img{width:100%;height:180px}
  .footer__grid{grid-template-columns:1fr}
  .lightbox{padding:16px;gap:10px}
  .lightbox__nav{position:absolute;bottom:24px}
  #lbPrev{left:24px}#lbNext{right:24px}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}